Autocorrect for Style/TrailingBodyOnClass breaks the code when body trails after singleton class definition

[j-miyake]

Related with #10617

The autocorrect for Style/TrailingBodyOnClass breaks this code

class Foo bar # <------------ `bar` is the actual first body line of this class.
  class << self; baz  # <------------ `baz` is the actual first body line of this singleton class.
    def func
      puts 1
    end
  end
end

to

class Foo 
  bar
  class << self baz # Syntax error
    def func
      puts 1
    end
  end
end

Expected behavior

class Foo 
  bar    
  class << self
    baz
    def func
      puts 1
    end
  end
end

Steps to reproduce the problem

Save the example code to example.rb, and run

exe/rubocop example.rb -a --only Style/TrailingBodyOnClass 

RuboCop version

$ bundle exec rubocop -V
1.29.0 (using Parser 3.1.2.0, rubocop-ast 1.17.0, running on ruby 2.7.5 x86_64-darwin20)
  - rubocop-performance 1.13.3
  - rubocop-rake 0.6.0
  - rubocop-rspec 2.10.0

[j-miyake]

There is another pattern.

This code

class Bar def bar; end
end

is corrected to

class Bar
  def bar end # Syntax error
end